Chusetts



(N0 Mbdel.)

W. F. &G. A. DRAPER.

SUPPORT FOR SPINNING SPINDLES.

Patented Mar. 6, 1888 UNITE STATES PATENT OFFICEO WILLIAM F. DRAPER ANDGEORGE A. DRAPER, OF HOPEDALE, MASSA- CHUSETTS, ASSIGNORS TO GEORGEDRAPER & SONS, OF SAME PLACE.

SUPPORT FOR SPINNING=SPINDLES.

SPECIPiCA'IION forming part of Letters Patent No. 378,877, dated March6, 1888.

Application filed August 15, 1887. Serial No. 246,994. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM F. DRAPER and GEORGE A. DRAPER, ofHopedale, in the;

companying drawings, is a specification, like letters on the drawingsrepresenting like parts.

In that class of spindles having a tapering pintle much trouble isexperienced in securing a uniform fit between the tapering exterior ofthe pintle and the interior of the bolster having a tapering bore,makers of such spindles aiming at great accuracy of fit to therebyinsure steadiness of rotation and equal distribution of wear of theparts.

Our invention consists in a bolster-case, a bolster placed thereinloosely and having a tapering interior, and a threaded step upon whichthe spindle rests and to which the said bolster is adj ustably attached,combined with a locking device to hold the said bolster in adjustedposition, as will be described.

Figure l, in vertical section, shows a spindle-bearing and railembodying this invention, the spindle shown in elevation having itswhirl in section. Fig. 2 is a sectionof Fig. 1 below the dotted line asx; and Fig. 3 is a modification showing the fibrous packing omitted fromthe bearing portion 7).

The rail A, spindle B, having a sleeve-whirl, O, and the bolter-case Dand nut E are and may be all as usual.

The spindle B has a tapering pintle, a, which it is desired shall alwaysbe supported uniformly and evenly at its sides by the interior sidewalls of the bolster b, the bore made in the bolster to form itsinterior lateral bearingsurface being the same taper as the pintle. Thelower end or extremity of the pintle rests on the step c, the lattersustaining substantially the weight of the spindle, the taperinginterior of the bolster fitting the tapering exterior of the pintle fromthe step c to a point preferably above the band-pull. The adjust mentbetween the bolster and step is made by or through the screw-thread e,by which the parts b and a are joined, the adjustment or relativemovements of the parts longitudinally being effected by the rotation ofthe bolster b, while the step portion 0 is restrained from rotation by apin or projection, e, in the case D, entering a notch, as c, in thestep. By r0- any desired number and more or less close together, and thepin or projection, constituting a locking device to retain the parts inadjusted position. W'e have shown the portion 1) as provided with holesfor oil, and the said portion 12 is shown as surrounded by a fibrouspacking, as 1), to thus enable the lateral bear ing portion to moveinthe bolster-case and follow the pintle of the spindle in its vibrations;but we desire to have it understood that the said fibrous packing may beomitted from the portion 12, as in Fig. 3.

In order that the lateral bearing portion 12 of the bolster may beconnected to the step, so as to move with the pintle and not move thestep for like distance, we have so cut the screwthreads connecting theportion 1) with the step as to leave considerable play between thethreads.

We claim- 1. The bolster-case, the bolster I), placed therein loosely,and having a tapering interior, and the threaded step upon which thespindle rests and to which the said bolster is adjustably attached,combined with looking devices to hold the said bolsterin adjustedposition, substantially as described.

2. The spindle, the bolster-case, and bolster held therein, made toconstitute a lateral hearing portion, a step portion and means toconnect them in an adjustable manner, combined with two pins orprojections to restrain the rotation of. both the bolster and the stepby the action of the spindle, yet permit the said parts to be adjustedone-with relation to the other longitudinally when desired, as and forthe purpose set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

WM. F. DRAPER.

GEO. A. DRAPER.

Witnesses:

G. W. GREGORY, F. L. EMERY.

